var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

//设置handlebars视图引擎
var handlebars = require('express3-handlebars').create({defaultLayout:"main"});
app.engine('handlebars',handlebars.engine);
app.set('view engine','handlebars');

// view engine setup采用。jade视图引擎
//app.set('views', path.join(__dirname, 'views'));
//app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', routes);
app.use('/users', users);

app.get('/',function(req,res){
  res.render('home')
});

app.get('/about',function(req,res){
  var randomFortune = fortunes[Math.floor(Math.random()*fortunes.length)];
  res.render('about',{fortune:randomFortune});
})


// catch 404 and forward to error handler
//app.use(function(req, res, next) {
//  var err = new Error('Not Found');
//  err.status = 404;
//  next(err);
//});
app.use(function(req, res, next) {
  res.status(404);
  res.render('404');
});

//500错误处理器（中间件）
app.use(function(err,req,res,next){
  console.error(err.stack);
  res.status(500);
  res.render('500');
})

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});


module.exports = app;
